Apparatus for holding paper-rolls.



J. HUNDHAUSEN. APPARATUS FORv HOLDING PAPE-R ROLLS.

APPLICATION FILED 111511.22, 1914.

1, 1 1 Q, 1 36. I Patenteasept. 8, 1914.

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APPARATUS FOR I-QLDNG PAPER-ROLLS.

Specification of Letters Patent. Patented Steph, 8', 1914.,

`Application filed April 22, 1914. Serial lo. 883,739.

To all whom t may concern Be it known that l, Josnrr-r HUNDHAUssN, acitizen of the United States, residing at Schofield, in the county ofMaraton and State of Wisconsin, have invented certain new and usefulImprovements in Apparatus for Holding Baper-Rolls; and l do herebydeclare-the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to improvements in apparatus for holding paperrolls, and it consists of hollow adjustable holding jaws adapted to beinserted into the hollow core of the paper roll, and to slip over thespindle used for winding and unwinding the same.

It is especially intended to provide quickly attaohable and detachableadjustable means for use in connection with various size cores of paperrolls where it is desired to wind thepaper on, or unwind it from saidcore.

My invention will be understood by reference to the accompanyingdrawings, in which the same parts are indicated by the same referencesymbols throughout the several views.

Figure l is a side elevation of the device as applied to al rotary shaftand inserted in the hollow core of the paper roll; Fig. 2 is a plan viewof the device mounted on the shaft, but with the core of the paper rollremoved; Fig. 3 shows a section along the line 3 3 of Fig. l, andlooking in the direction of the arrows; and Fig. a shows a centrallongitudinal section through the rotary shaft and the gripping arms.

A represents the shaft for winding or unwinding the paper roll, to whichthe device is connected, as will be hereinafter described.

B represents the hollow core of the paper roll which is constructed inthe usual way.

C represents a collar which is adapted to be mounted on the shaft A.rlfhis collar carries two holding members, the lower member D being fastto said collar, and the upper member F being hinged to the lower memberas by means of the pin E which projects into the slot fo in the lug f ofthe upper member. These two members D and F have the jaws Z and f whichproject into the hollow core B, and the backs of these jaws arepreferably ribbed or roughened, as at f2, to firmly engage on theinterior of the core B when the jaw f is pressed outward, as will behereinafter described. These two holding members are Aprovided with athick central portion O registering with the pin and taper forward andrearward in thickness, as shown in Fig. 4l.

The collar C is provided with arms C', spanned by the bolt G, on whichbolt the eocentric H. and the yoke 7c of the operating lever K arepivoted. The eccentric H is provided with holding teeth 7L to engage thepawl m carried by the end of the rod M, the other end of which rod isprovided with a thumb lug m. This pawl is normally pressed intoengagement with the teeth It by means of the coil spring N mountedbetween the lugs 7c of the lever K, and having its free end bearingagainst the collar m2 of the rod M. ln operation the eccentric is thrownto the disengaged position indicated by the dotted lines in Fig. l,releasing the arm F; and the collar C, carrying the members D and F, isslid on the shaft A until the holding jaws d and f project into thehollow core B, then by turning the eccentric down toward the positionshown in full lines in Figs. l and 2, the two members D andL F are.rocked about their fulcrums O, and the holding jaw f is pressed outward,causing the two jaws f and Z to engage the interior of the core and atthe same time the fulcrums O of the members F and D grip the shaft Afirmly. TWhen this shaft A is caused to rotate it will turn the core B,thus winding or unwinding the paper, as the case may be. These holdingdevices may be of varying sizes to suit the varying sizes of driveshafts or roll cores, but each holder is of itself adjustable withinlimits; thus where the shaft is of small diameter the two holdingmembers D and F would be close together and the lever K would be turnedto give the full throw of the eccentric, while if the shaft be of largerdiameter it might be possible to turn the hand lever only part of theway down before the desired gripping effect on the shaft and in the coreis secured. The conditions would be reversed if while the diameter ofthe shaft remains constant, the diameter of the hollow core beincreased.

t will be obvious that the device may be quickly applied to or removedfrom the core, and also from the shaft A, when desired.

It will be obvious that various modifications might be made in theherein described construction and in the combination and arrangement ofparts which could be used

